Avernus

Etymology
, from, , from +. The lack of birds was likely due to fatal gases like carbon dioxide seeping from the volcanically active lake.

Proper noun

 * 1) The entrance to Hell or the underworld, or the underworld itself.
 * 2) A lake in Southern Italy.
 * 1) A lake in Southern Italy.

Translations

 * Italian: Averno, Lago Averno
 * Latin: Avernus, Lacus Avernus

Etymology
,, from +. The lack of birds was likely due to fatal gases like carbon dioxide seeping from the volcanically active lake.

Proper noun

 * 1)  (lake in Southern Italy)
 * 2) The underworld